A MUD (multi-user dungeon) is a text-based game where players can take on a different identity and mold their character into whatever they wish. They're like adventure games with themes ranging anywhere from fantasy to the future. Some are all about role-playing and some are just about killing things to get stronger.
I know text-based sounds a little tedious, but they're really quite enjoyable once you get used to it. Leaves a lot to the imagination.
There are also some graphical MUD type games around such as Ultima Online and Everquest.

okei all you violent game loevers, if someone here with fast connection would host a gaming server for some time (Quake/QII/Q3Ademo/Halflife/Counter-Strike/Kingpin) and post pasword on this board so only we can p[lay.. actially if we get enough people to play it'd be cool to frag eachother

if it actially happens, i'll teach you how to respect children using my l33t skillz powered by 33.6k

hoopmoo...ill play q3/ut againts all you momma's boys...hehe....even though ive been taking a lot of time on my music, so right now i kinda suck. but anywayz. if you post a new thread and people want to play, count me in...monkeynutz!!!!!